Steam-boiler



(No Model.)

B. T. COPELAND.

STEAM BOILER.

Patented Sept. 25, 1888.

llNTTnn STATES PATENT OFFICE,

EDWIN T. COPELAND, OF BROOKLYN, NEW YORK.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 390.068, dated September 25, 1888.

Application tiled November 3, 1887. Serial No. 254,138.

To all whom iv may concern:

Be it known that 1, EDWIN T. COPELAND, a citizen of the United States, residing in Brooklyn, Kings county, and State ofNew York, have invented certain new and useful Improvements in Steam-Boilers, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates specially to the improvement of that style of watertubc boiler in which valves are provided for the purpose of disconnecting or shutting oii" the passage of water through any one or more of the water-tubes of which it may be composed. The object of such improvements is a more reliable control of the several water-tubes and the eradication of the numerous and dangerous joints liable to leakage, and to provide for an unobstructed passage through the water-tubes While in use.

My improvements consist in the combination, with the ends of the several tubes of a tubular boiler, of a manifold into which the lower ends of said tubes are fastened and within which are inclosed and operated a se ries of valves adapted to close the immediate ends of said tubes, a tube sheet forming a portion of the steanndrum of said boiler, into which the upper ends of said tubes enter and are fastened, and a series o'fball-valves adapted to plug or close the associate ends ofsaid tubes.

Referring to the drawings, Figures 1 and 2 represent a sectional'elevation and horizontal crosssection of coil-boiler supplied with my improvements, the manifold being applied to the lower ends of the coils and the steam and water drum, with contained check-valves, at the upper ends of the tubes. Fig. 8 is a horr zontal cross-section through manifold, showing detail of valve and tube-connection. Fig. 4shows the construction and application of the check-valves for the steanrdrum ends of the tubes.

Similar letters of reference designate like parts or portions in all the figures.

The letter A designates the steam and water drum of the coil-boiler.

B designates the water-tube portion of the boiler, coiled in this case and connected at the upper end with the drum A and at the lower end with the manifold O.

(No model) tubes and adapted to close each its associate tube end.

F and F are communicating pipes forming a return connection between the drum and manifold to keep up the circulation while the boiler is in operation.

G designates the uptake for smoke, and H the walls of the boiler.

To effect a control of the circulation, the ball-checks are constructed to lift in the direction of the desired movement of the water and to close if the movement should by chance or accident be changed. If, for instance,while the boiler is in use a tube becomes ruptured, the water blows out at the rupture, the reverse movement closes the ball-valve at the upper end, and the lower end is closed by the stop valve D.

It is evident, of course, that the manifolds G, with inclosed valves D, can be located at both ends of the tubes, it only being necessary where stop-valves are used that the stems d shall be continued through the walls of the furnace within easy reach and to be operated by the fireman or engineer in charge.

I claim- In combination with the tube ends of a water-tube boiler, the manifold 0, into which the lower ends of the tubes are fastened and within which are inclosed and operated a series of valves adapted to close or plug the inwardlyprojecting ends of the water-tubes, the tubesheet of the steam and water drum into which the upper ends of the tubes are fastened, and a series of ball-valves adapted to close or plug the tube-sheet ends of said tubes, as and for the purposes set forth.

EDWIN T. COPELAND.

Witnesses:

WM. H. WEIGHTMAN, A. M. PIERCE. 

